47results about How to "Reduce transmission force" patented technology

A protective material/structure is provided that reduces the risk of injury for a person after contact with said material/structure, and is based on a structure where an inner and outer shell can move relative to each other. The shells are separated by spikes or thin beams and the outer shell covers or envelops the spikes. The spikes or beams are constructed so that they permit displacement of the outer shell relative to the inner shell in the event of an oblique impact against the protective material/structure. The spikes or beams are designed to be thin/slim and can be made of flexible polymer materials such as plastics, rubber or fibers. This enables the spikes to give way after a tangential/rotational impact and thereby efficiently reduce the negative effects of such an impact on the brain. The material/structure can be used in e.g. helmets, vehicle interiors, vehicle exteriors, indoor house building material, boxing gloves and the like.

A drive arrangement is provided for motorized pivotal movement of a vehicle door. The drive has a self-locking motor unit, a gear connected downstream of the motor unit for producing linear drive movement, and a clutch connected therebetween. The clutch can be moved into an engaged state in which the motor unit for nominal operation is engaged to the vehicle door. When the motor unit is turned off, manual movement of the vehicle door is blocked. The clutch can be moved into a released state in which the motor unit is separated from the vehicle door in terms of drive engineering. The clutch can be moved into the intermediate engaged state with reduced transmission moment and force so that the vehicle door is kept in its current position at any time by self-locking of the motor unit, but can be moved by manual actuation with a minimum actuation force.

A power tool has a drive motor and first and second tool members driven reciprocatingly by the drive motor in opposite directions, respectively. The first tool member is driven by a first connecting rod and the first connecting rod is connected to the first tool member by a first pivot joint arranged on the first connecting rod. The second tool member is driven by a second connecting rod and the second connecting rod is connected to the second tool member by a second pivot joint arranged on the second connecting rod. The first pivot joint is arranged on an end of the first connecting rod which end is facing the tool members. The second pivot joint is arranged on an end of the second connecting rod which end is facing away from the tool members.

The invention belongs to the field of automobile door lock systems, and particularly relates to a side door lock transmission mechanism. The mechanism comprises a baseplate, wherein a ratchet wheel riveting shaft and a ratchet pawl riveting shaft are fixed on the baseplate; a ratchet wheel is rotationally connected onto the ratchet wheel riveting shaft; the ratchet pawl is rotationally connected onto the ratchet pawl riveting shaft; the front part pawl end of the ratchet pawl is propped against the locking meshing cambered surface of the ratchet wheel; a transmission shaft is rotationally arranged at the end part on the side of the baseplate away from the ratchet pawl riveting shaft; a transmission cam is connected onto the transmission shaft in an interference fitting manner; a sliding block positioning shaft is arranged at the lower part, corresponding to the transmission shaft, of the baseplate. The mechanism is simple and compact in structure, can reduce the transmission force effectively through the arrangement of a connecting rod sliding block cam on the base plate, is simple in structure, and can improve the transmission efficiency and the transmission stability greatly.

In this motor, the transmitting shaft and the gear decelerator are installed on each side of the motor, the wheel can be installed on the output shaft of the gear decelerator directly, the gear decelerator is designed with optimization according to the needs. The decelerating gear applies the inner and outer gearing alternately, thus ensures the concentricity of the transmitting shaft with the output shaft. The compact structure improves the performance of the device.

This invention relates to a door lock comprising a lock body (3) fitted with a front plate and a bolt (4). The transfer of external force to the locking piece (5) in the lock body is reduced. The reduction of external force is arranged in two stages of transmission. At the first stage of transmission, the transmitted force is reduced using a wedge part (10) that is in force transmission contact with a lever (11). The second stage of transmission constitutes the lever.

The invention discloses an efficient low-noise reciprocating piston type refrigerator compressor. The efficient low-noise reciprocating piston type refrigerator compressor comprises an air suction valve slice, an exhaust valve slice and a valve plate, wherein the compressor operates back and forth in the manner that a motor drives a crankshaft and the crankshaft drives a piston, and a coating is arranged on the surface of either the air suction valve slice or the exhaust valve slice; or the surfaces of the air suction valve slice and the exhaust valve slice are respectively provided with a coating; the coatings are made of polytetrafluoroethylene or PEEK engineering plastics. In addition, the invention further relates to the manufacturing process of the refrigerator compressor. By means of the technical scheme, the noise of the valve slices of the compressor is largely lowered, fatigue strength is improved, the gas transmission coefficient of the compressor is increased, and therefore the refrigerating capacity is increased. The effect of eliminating the exhaust pulse of the compressor is good, and pressure loss is reduced, so that the gas transmission coefficient is increased. The noise of the compressor is lowered, the energy efficiency ratio of the compressor is improved, and the purposes of saving energy and protecting the environment are achieved.

The invention discloses a multi-head embroidery machine shuttle box assembly with a thread buckling mechanism and an embroidery machine. The multi-head embroidery machine shuttle box assembly comprises a plurality of shuttle boxes arranged side by side, a multi-head rotating shuttle lower shaft driving mechanism and the thread buckling mechanism, wherein the multi-head rotating shuttle lower shaft driving mechanism comprises a lower shaft and an auxiliary shaft arranged in parallel with the lower shaft, two ends of the lower shaft are correspondingly in transmission connection with the two up-down shaft transmission boxes, the auxiliary shaft is driven by an auxiliary shaft motor, at least one transmission assembly synchronously driving the lower shaft to rotate with the up-down shaft transmission boxes is arranged between the auxiliary shaft and the lower shaft in the axial direction, The thread buckling mechanism comprises a thread buckling driving rotating shaft which is rotationally arranged and is parallel to a thread buckling shaft, the thread buckling driving rotating shaft is connected with an eccentric wheel, the eccentric wheel is connected with the thread buckling shaft through a connecting rod, and the thread buckling driving rotating shaft is driven by a thread buckling driving motor or a lower shaft. The rotating amplitude of the lower shaft in the length direction cannot have too large deviation, transmission force is prevented from being attenuated in the direction of the lower shaft, and thread buckling of a plurality of rotating shuttles can be solved.

The invention provides a system and method for controlling an engine valve spring. The method comprises the steps that the pressure of the valve spring is adjusted on the basis of the engine rotation speed, valve spring pressure adjustment comprises adjustment on electric control connected with an oil pump, the oil pump controls the lift of a base, and lift control is conducted on the basis of the oil supply amount of the oil pump to the base. For example, when the engine rotation speed is changed to 2,000 r/min from the idle speed which is 700 r/min, a piston is pushed through oil pumping of the oil pump to be pushed to move upwards from the start point, the valve spring pressure is increased, and the valve reset speed becomes high.

The invention discloses a sluice valve with high sealing property. The sluice valve with high sealing property comprises a valve rod, a valve bonnet, a valve seat and a flashboard. The valve rod and the flashboard which are fixedly connected are sealed in the valve seat by the valve bonnet. The flashboard is driven to move up and down by the valve rod, and the valve seat is started and stopped bythe valve rod. The flashboard is of a dual-flashboard structure composed of a left flashboard and a right flashboard. Upper portions of the left flashboard and the right flashboard are fixed through bolts, and inner sides of lower portions of the left flashboard and the right flashboard are in elastic support through springs. According to the dual-flashboard structure of the sluice valve, angle limiting adjustment of the upper portions are achieved through bolts, and adjustment support of the lower portions are achieved through springs. Pressing force is added by the springs. Pushing and pressing type sealing is formed. Good sealing property on a sealing surface between the flashboard and the valve seat is always kept. A novel type nonmetal sealing filler is adopted, sealing property of the valve bonnet is improved, and meanwhile, polished rod transmission force can also be reduced. A sectional type fixing method is adopted by the valve rod; a former form of spiral rising is changed into a form of straight rising; and torque transmission is changed into stretching sliding transmission. According to the sluice valve with the high sealing property, possibility that the valve rod bends is directly eliminated; and failure of a valve in an existing design is effectively and completely eradicated.

The invention provides a setting method for valve pressure. The setting method includes the steps that the pressure of a spring of the valve is adjusted according to the rotating speed of an engine through a vehicle-mounted ECU based on the input order of a control device; furthermore, the control device inputs corresponding numbers so as to set the rotating speed work value of the engine; due to the fact that the rotating value of the engine includes the set value, the vehicle-mounted ECU adjusts work of an electromagnetic attraction motor when the rotating speed of the engine reaches the value, and a lift device is pushed to the final position; and when the rotating speed of the engine is smaller than the set value, the lift device is shrunk to the starting position.

A carding machine comprises a rack, wherein a licker-in roller, a cylinder and a doffer are successively mounted on the rack from front to back; a first carding region cover plate, a second carding region cover plate and a third carding region cover plate are successively mounted on the top of the cylinder from front to back and correspond to the rack; a gap is formed between the first carding region cover plate and the second carding region cover plate; and a gap is also formed between the second carding region cover plate and the third carding region cover plate. The carding machine is provided with the three carding cover plates, three carding regions are formed, the first carding region has main effects of neatening, smoothly carding fibers and preliminarily discharging impurities andlower piles, the second carding region is further used for neatening, carding the fibers and preliminarily discharging the impurities and the lower piles, the third carding region has main effects ofprecisely carding and further discharging the impurities and lower piles, each of the three carding region cover plates is provided with a cover plate cleaning device, the three carding region cover plates can be cleaned independently, and after being cleaned, the carding cover plates can be rapidly and efficiently used in carding operation. The carding machine is divided into three portions, radian occupied by each carding cover plate is also reduced, the carding cover plates can be cleaned as quickly as possible, the cover plate cleaning efficiency is further improved, and a carding effect is ensured.